School Lunch Water Intake Calculator

Estimates the water content of a food item from its weight and approximate water percentage.

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Result

Water content

160 mL

Summary

~80% water from 200 g food

Notes

· Many fruits and vegetables are 80-95% water, cooked grains and meats are typically 60-75%, and dry foods like crackers or nuts are under 10%. Check a food composition database for a more precise percentage.

School Lunch Water Intake Calculator — How It Works

Estimates the water content of a food item from its weight and approximate water percentage.

How it works

Enter the weight of the food item, in grams.
Enter its approximate water content as a percentage.
The tool multiplies the weight by the water percentage to estimate the water content in milliliters.

Formula

Water content (mL) = Food weight (g) × (Water % ÷ 100)

Example

200 g of food that’s 85% water contains about 170 mL of water.

Notes

Many fruits and vegetables are 80-95% water, cooked grains and meats are typically 60-75%, and dry snacks are often under 10%. Use a food composition database for precise values — this is a quick estimate for tracking hydration from food.

Try the School Lunch Water Intake Calculator — instant results in your browser, no sign-up.

FAQ

Is this free?

Yes — the School Lunch Water Intake Calculator runs entirely in your browser, no sign-up required.

Is this medical or nutritional advice?

No. This tool provides general estimates for planning purposes only and is not a substitute for advice from a registered dietitian, doctor, or official nutrition label.

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